Jeremiah 52:6-7
52:6 By the ninth day of the fourth month the famine in the city was so severe the residents had no food.
52:7 They broke through the city walls, and all the soldiers tried to escape. They left the city during the night. They went through the gate between the two walls that is near the king’s garden. (The Babylonians had the city surrounded.) Then they headed for the Jordan Valley.